Home / 1,912.88-2,867.70-1,822.16

Finding the Fourth Proportional to 1,912.88, 2,867.70 and 1,822.16

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Solution

The fourth proportional to 1,912.88, 2,867.70 and 1,822.16 is: 2,731.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.88 : 2,867.70 = 1,822.16 : x
  2. Step 2: Convert to fraction form
    1,912.88/2,867.70 = 1,822.16/x
  3. Step 3: Cross multiply
    1,912.88x = 2,867.70 × 1,822.16
  4. Step 4: Simplify right side
    1,912.88x = 5,225,408.23
  5. Step 5: Solve for x
    x = 5,225,408.23/1,912.88
  6. Step 6: Final answer
    x = 2,731.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.